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| No. | Problem | Possible Cause | Solution |
| 1 | No Product Water | Water Supply Turn off/ no raw water | Turn off feed- or/Supply-other |
| 2 | No Enough Product Water | Low water pressure feed water supply is blocked clogged pre-filter cartridge | Check source water line pressure clear restriction replace pre-filter or clean cartridge |
| 3 | System does not shut off | Float switch is not working | Call to our technician |
| 4 | No reject water | Clogged flow rusticator tube | Call to our technician |
| 5 | Look at fitting | Tubing not connected tightly defective tube | Tighten the connector cut damaged area from tube or replace the tube |
| 6 | Output TDS cannot be | Test control valve is not functional | Call to our technician |
| 7 | Pump not working | Loose electrical connection adaptor/SMPS | Call to our technician |
| 8 | Pump functioning but not producing purified water | Pre-filter carbon cartridge clogging water inlet solenoid valve failed | Call to our technician |
| 9 | No UV lamp indication on | UV tube is not working | Call to our technician |
| 10 | Leakage at filter | Defecting nut loosened or not properly tightened | Call to our technician |
| 11 | Leakage at threaded | Connecting nut loosened or not properly tightened | Call to our technician |
| 12 | Bad tasting water | Check TDS level & check pre & post carbon filter | Call to our technician |
| 13 | Bad tasting water abnormally on and off | Pre-filter may have clogged or inlet water pressure is too low | Call to our technician |